.canvas {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.content {
  box-shadow: 0 0 8px 4px fade(#000000, 20);
  position: relative;
  min-height: 100%;
}
